Replace your default AK-47 and M4 data line with this one :

$ AK47			INSTANT_HIT	140.0 170.0	355	-1		5	riflebad	 30	 30		0.78 -0.06  0.13     0  0	0.40 0.9 	 6 10  8	 6 10  8  99	7001
$ AK47			INSTANT_HIT	120.0 150.0	355	-1		5	rifle		 30	 30		0.78 -0.06  0.13     1  999	0.50 1.1 	 6  8  6	 6  8  6  99	7011
$ AK47			INSTANT_HIT	150.0 190.0	355	-1		5	rifle		 30	 70		0.78 -0.06  0.13     2  999	0.80 1.1 	 6  8  6	 6  8  6  99	7031\


$ M4				INSTANT_HIT	140.0 190.0	356	-1		5	riflebad	30	 30		0.74 -0.05  0.13     0  0	0.45 0.9 	 6 10  8	 6 10  8  99	7001
$ M4				INSTANT_HIT	110.0 150.0	356	-1		5	rifle		30	 30		0.74 -0.05  0.13     1  50	0.65 1.1 	 6  8  6	 6  8  6  99	7011
$ M4				INSTANT_HIT	130.0 190.0	356	-1		5	rifle		30	 60		0.74 -0.05  0.13     2  999	0.80 1.1 	 6  8  6	 6  8  6  99	7031